| 摘要 |
A motor-driven road vehicle is provided with a water supply system 10 which provides a source of hot water for use of the vehicle driver and/or others. The system 10 comprises a first water storage chamber 11, a second pressurised water storage chamber 13, a heat exchanger coil 16 disposed within the chamber 13, water pump means 17, pressure sensitive means 18 operable to active or to deactivate the pump means 17 as pressure in the chamber 13 is or is not below a predetermined value, and manually-operable control valve means 19. The heat exchanger coil is connected to the engine cooling system of the road vehicle. Additional heat may be provided by an electrically-powered immersion heater 45. In use, heated water is drawn from the chamber 13 by use of a valve 37 and/or a valve 41. In consequence, pressure falls within the chamber 13 whereupon the pressure sensitive means 18 causes the pump means 17 to replenish the water, by extracting it from the chamber 11. <IMAGE> |
